An efficient Pd/C aromatization of 1,2,3,4,9,10-hexahydroacridine-1,9-
diones to 1-hydroxyacridones is reported. The previously reported four
-step synthesis of the diones has been extended to give a number of me
thoxy substituted derivatives and the aromatization reaction, along wi
th hydrobromic acid demethylation, provides a useful route to various
methoxy and hydroxy substituted acridones. (C) 1997 Published by Elsev
ier Science Ltd.